The Hale Telescope at the Palomar Observatory was the most powerful in the world, with a five-metre concave mirror at its heart. It cost a mammoth $6 million US, and scientists at the time reckoned that they would be able to push the borders of the known universe to one billion light years away. The Square Kilometre Array, due to come on stream in 2020, will be able to look back in time to practically the dawn of the Universe, 13,5 billion years ago.
THE WINTER HOME CHECKLIST Unclog gutters
of twigs and leaves, particularly in the winter-rainfall Western Cape.
Check your heating sys-
Inefficient heating will use more electricity, so it’s worth your while to have them checked out by a professional.
On the Highveld, irrigation system valves can freeze and become damaged during winter. Disconnect your hoses and store them in your garage instead.
Insulate. Insulation will regulate the temperature in your home all year round and save you money on temperature control. Don’t forget gaps under doors, windows and wall cavities. ( Source: Showroom Condition, Gauteng.)